Composition and method for dyeing keratin fibers with o-benzoqui

Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing

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8589, 8590, 8603, 8662, A61K 713

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active

058794115

ABSTRACT:
A non-oxidative dye composition for keratin fibers contains an o-benzoquinone compound of formula (I): ##STR1## wherein R1, R2, R3 and R4 are each, independently of each other, hydrogen, chlorine, an alkyl group with from 1 to 5 carbon atoms, an alkoxy group with from 1 to 5 carbon atoms, an alkylenedioxy group with from 1 to 2 carbon atoms or an amino group --NR.sup.5 R.sup.6, wherein R.sup.5 and R.sup.6 are each, independently of each other, hydrogen, an alkyl group having from 1 to 6 carbon atoms or an aryl group; and at least one amino- or hydroxy-compound of formula (II), X--A--Y, wherein X represents a nitro group, a cyano group or a sulfonate group; Y represents a hydroxy group or an amino group --NR.sup.a R.sup.b, wherein R.sup.a and R.sup.b are each, independently of each other, hydrogen or an alkyl group having 1 to 4 carbon atoms, and A represents a substituted or unsubstituted straight chain, cyclic or branched alkyl group having from 1 to 6 carbon atoms or a substituted or unsubstituted aromatic, heterocyclic or carbocyclic group.

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